150,775 inhabitants in 58.742 houses, with a density of 279 people per hectare. Economy Salamanca is one of the wealthiest and most expensive areas in Madrid, with a comparatively high cost of living and some of the most expensive real estate in the city. Calle de Serrano is the third most expensive street in Spain, according to Cushman & Wakefield. A significant number of diplomatic missions are in Salamanca, such as the Swiss embassy at C/ de Núñez de Balboa and C/ Goya, the French embassy on C/ Villalar, the United States embassy on C/ Serrano, and the Italian embassy on C/ Juan Bravo. Salamanca is also home to the IE Business School (previously Instituto de Empresa) which is ranked among the top 10 business schools in the world. Photogallery References External links Districts of Madrid